SOLUTION: If 𝑓(1) = 3 and 𝑓(𝑛) = −2𝑓(𝑛 − 1) + 1, then 𝑓(5) = A. -5 B. 11 C. 21 D. 43

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Question 1049963: If 𝑓(1) = 3 and 𝑓(𝑛) = −2𝑓(𝑛 − 1) + 1,
then 𝑓(5) =
A. -5
B. 11
C. 21
D. 43
Found 2 solutions by stanbon, advanced_Learner:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
If 𝑓(1) = 3 and 𝑓(𝑛) = −2𝑓(𝑛 − 1) + 1,
----
f(1) = 3
f(2) = -2*3+1 = -5
f(3) = -2*-5+1 = 11
f(4) = -2*11+1 = -21
f(5) = -2(-21)+1 = 43
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Cheers,
Stan H.
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then 𝑓(5) =
A. -5
B. 11
C. 21
D. 43
Answer by advanced_Learner(501)   (Show Source): You can put this solution on YOUR website!
n=1
= first term is 3.
n=2

=
=
=
=
n=3
=
=
n=4

=
=
n=5

=
=
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